Process for lustering silk threads.



# UNITED )srnrrisrggnnvr OFFICE-- PQROCESS FOR LUSTERING 'SILK THREADS.

NoDrawing.

To all whom it. may-concern:

Be it-iknown thati-I, EpWARD POHL, a citizen-'ofthe Unitedestatesof America, and a residenteof .New York, county and Stateof New York, have invented a. certain new and Improved Process for Lustering 'Silk Threads, of whieh the-foliowing is a specification. 7 f

-My :invention relatesito the. art of lustering and ifinishing silk I threads.

In the gpart-icular branch of the 'art to which ithis iinvention irelates, the individual threads :are usually drawn through a bath containing a finishing-and lustering solution, andareithen conveyed directly. over an ironing 1 table by means of which they are dried and -ironed;-and: arethen' finally wound =np on suitable bobbins; 'In such aprocess,

it will bear'eadily seen thatifor practical purposes, it is necessary to run the filaments quickly through the solution and over the ironing table,.-and if the work is not done -quickly, the resulting product in a days work is so small as to brin the cost up to a prohibitive degree. Furt ermore, it will also be seen that in such a process, there is no way of regulating or varying the'amount of time during which the threads remain in the bath in proportion to the amount of time inwhich they travel over the ironing table. This is also disadvantageous because, while it takes-about the same length of time to iron threads of diiferent characters, the amount-of time during which a. thread should be immersed in a solution varies in accordance with the thickness of the threads and the density of the solution.

In my resent invention, I propose to firstsoak t e threads ina iinishing solution foraipredetermined period of time dependent 'upon the thickness of the threads and the density-of the-solutiomand then to dry,

'finish-andiron the-satire. I preferably take the silk threads-either .in the original skein or as wound up-upon bobbins orother-holders and immerse them directly in a vessel containing a. suitable finishing solution,- and permit the threads to remainln the solution for a period-0f time usually varying from thirty seconds to five .minutes; the thicker the threads or the thinner the solution, or both, the longer the period of time-which is necessary. After the threads have been thus immersed for the roper length of time, I remove them an then preferably permit them to partially dry by means of =Specificationof Letters-Patent. *Pfitented J a11 '118,--1191(), -Appiieation.fileii'flovember 18.1908. Seria1-No."462,524. i

manner well known -to those skilled :in this art.

In carrying-out the foregoing process, it.

will he-seen that 11am ableto nmmerse-ithe threads 'for a period I of time in 1 no. way dependent upon the period during-whiclr they are subjected to the-ironing step of1thet-p'rocess. The ironing may I be. effected-very ;rap-

idly while a-largequantityrofmateriaLmay be soaking in blilk'in the solution in the meantime. It will also *be seen -:that :I can as readily vary-the period of-t-ime "during which the threadsvrecei-ve their, preliminary drying before they are subjected -to the ironing step of theiprocess,-as each of the steps are carriedout independently of the-others.

What I claim is:

1. The herein described process forlusand the density of the solution, and'then ironing the same.

3. The herein :describedprocess for lus- -tering silk threads which consists in first soaking the threads --in bulk in a finishing solution for a period of time varied-in accordance with the thickness of thethreads and then drying the same by evaporation and finally in ironing the same. i

-4. The herein described-process for lustering silk threads which eonsists in first soaking the threads in bulk in ,aFfinishing solution for a period of time varied in accordance with the thickness of the threads and then drying the same by-e-vaporation until-they are about 90% dry andthen.iron-- ing the same.

5. The herein described process for lustering silk threads which consists in first immersing the threads'in a lustering sqution :ind retaining theni in the solution for a. period of time varied in aceordance with the thickness of the threads or the density 7. The herein described proeess for lustering silk threads which, consists in first soaking the threads in a finishing solution of thesolution, in then drying the threads while they arewound in mass, in then 3-1? 5 by evaporation and finally in ironing the threads.

6. The-herein described process for lusteringjsilk threads which consists in first soaking the threads in a finishing solution 10 while they are wound in mass, and then unwinding and ironing the same.

tially drying the same by evaporation w e still in mass, and in then unwinding and ironing the same. EDWARD POHL.

Witnesses: D. HowAno HAYWOOD, LYMAN S. ANDREWS, Jr. 

